<form method="POST" action="index.php?site=login" name="login">
    <input type="text" name="loginname" size="20" maxlength="20" class="userpanel_login_editbox"><br />
    <input type="password" name="password" size="20" class="userpanel_login_editbox"><br />
    <input type="hidden" name="oldUrl" value="$oldUrl$">
    <input type="submit" name="login" value="%login%" class="userpanel_login_button">
</form>